"What are the common problems with the C5 Z06's LS6 engine?"

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Based on my research, the LS6 engine in the C5 Corvette Z06 (2001-2004) is actually considered one of the most robust performance V8s of its era, but there are still some known issues to be aware of:

## Common LS6 Engine Issues

**1. Oil Consumption**
- Some early 2001 LS6 models experienced higher-than-normal oil consumption
- Often traced back to the PCV system design and piston ring gaps
- By 2002+, this was largely resolved

**2. Camshaft/Cam Lobe Wear (particularly early 2002 models)**
- Some early 2002 units had minor crankshaft counterweight issues and cam lobe wear if oil wasn't changed regularly
- Using proper oil change intervals is crucial with high-detergent 10W-30 or 5W-30

**3. Lifter Tick**
- Not uncommon in neglected units with irregular maintenance
- Usually indicates need for valve train attention

**4. Oil Leaks**
- Rear main seal and timing cover areas should be inspected
- Oil pan gasket leaks are common on C5s generally and require extensive labor to fix (need to drop front subframe)

**5. Water Pump Failure**
- The plastic impeller typically fails around 100k miles or 10 years
- Should be replaced preventively

## What About the 2001 vs. 2002-2004?

The 2001 LS6 (385 hp) is the debut year and some advised avoiding it due to early-production quirks. By 2002, the LS6 was significantly improved with:
- 405 hp output
- Higher-lift camshaft
- Hollow-stem valves with sodium-filled exhaust valves
- Elimination of restrictive "pup" catalytic converters

The 2002 is considered the "apex" of the C5 Z06 - the one you're looking at with 4,500 miles! With proper maintenance, the LS6 is known for being very robust, with many examples exceeding 150k+ miles without major issues.

The car you're considering at 4,500 original miles with climate-controlled storage is essentially a time capsule - the LS6 should be in outstanding condition.

Can I answer anything else about this specific Z06 or help you find similar examples?

2002 Chevrolet Corvette Z06

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